Honestly I'd saying making him the strongest in the first place was a weird choice to begin with.
He'd already hyped up WB and Roger as the top two, Kaido's title was questionable from the start because of that.
Should've emphasized him the indestructible one instead, or just let his feats speak for him.
Anyways for Oden it was definitely because of glazing. No way Oda would hype him that much and let him actually lose in a fair fight.